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57 decisions · 14 cited sources · free to read

Store UX, with the receipts.

See how real stores solved the question in front of you — annotated, graded, and one tap from a cited verdict. Watch the examples first; read the detail after.

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Or jump to: cross-page (18), product page (16), category page (8)

57
decisions
with a cited verdict
17
real stores
sampled so far
14
research
sources cited
9
verified
quotes checked at source
Reel · from a graded decision

When product page add-to-cart works (and when it doesn't)

4 real stores from this decision, each with the note we recorded. Look first, then read the verdict.

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Product
When product page add-to-cart works (and when it doesn't)
A prominent, stable add-to-cart button lifts immediate buyer action when visible without scrolling on product pages for single, clearly priced items, especially if mobile sessions are significant.
Product
When product page add-to-cart works (and when it doesn't)
A prominent, stable add-to-cart button lifts immediate buyer action when visible without scrolling on product pages for single, clearly priced items, especially if mobile sessions are significant.
Product
When product page add-to-cart works (and when it doesn't)
A prominent, stable add-to-cart button lifts immediate buyer action when visible without scrolling on product pages for single, clearly priced items, especially if mobile sessions are significant.
Product
When product page add-to-cart works (and when it doesn't)
A prominent, stable add-to-cart button lifts immediate buyer action when visible without scrolling on product pages for single, clearly priced items, especially if mobile sessions are significant.
Today's verdict · decision №54

A sticky add-to-cart bar lifts mobile add-to-cart rates when product pages scroll past two screens, mobile sessions exceed 40%, and the product has a single clear call to action.

But it adds UI weight, potentially harming slow pages, confusing complex configurations, or causing layout shifts if not implemented cleanly.

Evidence · High40% of 5 sampled stores
Read the decisionPlay reel
Product
Choosing how to handle sticky add-to-cart
A sticky add-to-cart bar lifts mobile add-to-cart rates when product pages scroll past two screens, mobile sessions exceed 40%, and the product has a single clear call to action.
Product
Choosing how to handle sticky add-to-cart
A sticky add-to-cart bar lifts mobile add-to-cart rates when product pages scroll past two screens, mobile sessions exceed 40%, and the product has a single clear call to action.

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5 decisionsHome page8 decisionsCategory page16 decisionsProduct page5 decisionsCart5 decisionsCheckout18 decisionsCross-page
Storefront of the week

Real stores, walked one stop at a time.

4 real stops

When product page add-to-cart works (and when it doesn't)

4 real stops from the store examples and notes on this decision.

Allbirds — The product page features a prominent "SELECT A SIZE" button above the fold, which is the primary action to proceed with purchasing the item.
Strong

Allbirds

The product page features a prominent "SELECT A SIZE" button above the fold, which is the primary action to proceed with purchasing the item.

All stops
Read the full decision
Decisions in rotation

Questions teams are weighing

Each is a real question with a one-line verdict you can act on, and the proof behind it.

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Free shipping bar

Free shipping bar: not present on the sampled page sampled for Allbirds.

Read the verdictFree shipping threshold

Free shipping threshold: not present on the cart page sampled for Alo Yoga.

Read the verdictGST calculator

GST calculator: not present on the checkout page sampled for Glossier.

Read the verdictHigh-intent filter chips

Category page uses brand/routine taxonomy to speed discovery.

Read the verdictHome best sellers

Home best sellers: not present on the home page sampled for Allbirds.

Read the verdictHome category tiles

Home category tiles: not present on the home page sampled for Allbirds.

Read the verdict
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